Interstate 99 in Pennsylvania

Interstate 86, 90 and 99 in Pennsylvania

Interstate 86 in Pennsylvania

Get started Erie
End State Line
Length 7 mi
Length 11 km
  • 1 → Cleveland / Buffalo3 Wattsburgh
  • New York

Interstate 86 or I -86 is an Interstate Highway in the US state of Pennsylvania. I-86 connects seven miles from I-90 at Erie to the New York state border.

Travel directions

I-86 at the state line.

I-86 begins east of the city of Erie at a trumpet interchange with I-90 and heads east in 2×2 lanes through a flat area of ​​meadows and forests. There are no seats on the route, I-86 has only one exit before reaching the New York state border. Interstate 86 in New York then continues to Jamestown and Elmira.

  • See BABYINGER for a list of Pennsylvania public libraries by county.


The highway opened to traffic in two phases in 1987 and 1988. The road was originally a super two and was widened to 2×2 lanes in 1996.

Traffic intensities

About 9,000 vehicles use this stretch of highway every day.

Interstate 90 in Pennsylvania

Get started West Springfield
End North East
Length 47 mi
Length 75 km

  • 3 West Springfield
  • 6 East Springfield
  • 9 Platea
  • 16 Fairview
  • 18 West Erie
  • 22 → Erie / Pittsburgh
  • 24 Erie
  • 27 Erie
  • 29 Erie
  • 32 East Erie
  • 35 Harbor Creek
  • 37 → Elmira
  • 41 North East
  • 45

New York

Interstate 90 or I -90 is an Interstate Highway in the US state of Pennsylvania. The highway forms a short east-west route in the northwest part of the state, along Lake Erie. The highway runs from the Ohio state border through the city of Erie to the New York state border. I-90 is 75 kilometers long.

Travel directions

I-90 at I-79 at Erie.

At Conneaut, Interstate 90 in Ohio crosses the border into Pennsylvania. The landscape is an alternation of forests and meadows without many differences in height. In the winter, extreme amounts of snow can fall here, when the “Lake effect snow” occurs, small intense low pressure areas that form above the warmer waters of the gigantic Lake Erie. The highway follows an east to northeasterly direction. The largest city on the route is Erie, with a population of 104,000. Here one crosses Interstate 79, which runs north into the city for a bit, and south to Pittsburgh. Little is seen of the city itself from the highway, because the highway is surrounded by forests, and the suburbs just don’t reach the highway. At the junctionwith Interstate 86 to Jamestown and Elmira one has a view over Lake Erie. Just past the village of Northeast, Interstate 90 in New York continues as the New York Thruway, a toll road. The section in Pennsylvania is toll-free.


Construction of I-90 began in 1958 along the entire Pennsylvania route. In 1959 the connecting section in Ohio opened to traffic as far as the Pennsylvania border. On June 1, 1960, the first 10 miles of I-90 to East Springfield opened to traffic. On October 28, 1960, the remainder of the route for 40 miles to the New York state border opened to traffic, making I-90 one of the first Interstates completed in Pennsylvania, with its short length also helping.

Traffic intensities

Every day, 19,000 vehicles drive between the Ohio and Erie border, peaking at 34,000 vehicles past Erie. East of Erie, 11,000 vehicles drive all the way to the New York state border.

Interstate 99 in Pennsylvania

Begin Bedford
End Mingoville
Length 85 mi
Length 137 km
1 Bedford ()

3 Bedford Airport

7 St. Clairsville


15 Claysburg

23 East Freedom

28 → Pittsburgh

31-33: Altoona

31 Plank Road

32 Frankstown Road

33 17th Street

39 SR-764

41 Bellwood

45 Tipton

48 Tyrone

52 SR-350

61 Port Matilda

62 → Clearfield

68 Graysdale Park

69 → State College

71 West State College

73 → Harrisburg

74 North State College

76 Houserville

78 Pleasant Gap

80 Pleasant Gap

83 Bellefonte

85 → Cleveland / New York

→ Milton

3rd Street

4th Street

Garden View



Trout Run

Steam Valley Road




Old US 15




North Mansfield



New York

Interstate 99 or I -99 is an Interstate Highway in the US state of Pennsylvania. The highway runs from Bedford on Interstate 70 to Interstate 80, in the middle of the state of Pennsylvania. Currently, I-99 has little passing interest. The number I-99 does not fit well in the grid, several lower numbers run further east, from I-81 and above. The route is 137 kilometers long, but US 15 between Williamsport and the New York state border should also be numbered as I-99. This is already a 100 kilometer freeway.

Travel directions

I-99 south of Altoona.

I-99 near State College.

I-99 at Bellefonte.

The highway begins just south of Bedford, where it intersects with US 30, before crossing Interstate 70, which is double-numbered with Interstate 76, forming a corridor from Cleveland and Pittsburgh to Philadelphia and Baltimore. I-99 runs through the hilly region of the Appalachian Mountains. After 35 kilometers you reach the city of Altoona, which has a population of 50,000 and is a regional center in Central Pennsylvania. From here runs the US 22to the west, as a highway to Pittsburgh. You pass through wooded valleys as I-99 curves slightly to the northeast. Between Tyrone and State College there is still a part missing, this is carried out by the US 220. In State College you cross the US 322, which runs to the capital Harrisburg. After that, I-99 ends at Interstate 80, the highway from Cleveland to New York.

A second section of I-99 from Williamsport to Interstate 86 in New York at Corning is numbered as US 15 in Pennsylvania, but will also become part of I-99. This part leads through very hilly and densely wooded area, especially the first 80 kilometers from Williamsport. Closer to the New York state border, the area becomes flatter and less densely forested. At Lawrenceville, Interstate 99 in New York continues to Corning.


Long before the road was numbered I-99, there was already talk of a highway. In 1969 the first 8 kilometers around Bedford opened to traffic. The highway really took shape during the 1980s and 1990s, and the last section opened to traffic with significant delays in 2007 and 2008, namely the stretch between Bald Eagle and State College.

In 1998, the number I-99 was approved for the highway by the AASHTO. The numbering of this highway has been strongly criticized for not fitting into the Interstate Highways numbering system and its short route does not justify a two-digit number.

Opening history

Van Unpleasant Length Opening
Exit 1 Exit 3 3 km 1969
Exit 45 Exit 52 12 km 1976
Exit 3 Exit 15 19 km 1980
Exit 23 Exit 33 16 km 1985
Exit 15 Exit 23 13 km 1989
Exit 33 Exit 45 19 km 1995
Exit 81 Exit 85 6 km 1997
Exit 73 Exit 81 14 km 25-11-2002
Exit 52 Exit 61 14 km 17-12-2007
Exit 61 Exit 73 19 km 17-11-2008


Long-term plans envision an I-99 running over current US 15 from Williamsport to Corning. This 119-kilometer route is already a freeway, the last part of which opened to traffic in New York State on October 8, 2013.

After that, I-99 can also be routed over I-80 and US 220 from Bellefonte to Williamsport. I-99 may even be extended over I-86 and I-390 to Rochester, New York in the distant future. This only requires number technical adjustments.

Interstate 99 in Pennsylvania